Davenport.



F. MARTIN.

DAVENPORT.

APPucATloN FILED APR. 29. 1914.

. Patented Apr. 17, 1917.

i T URNE Y FRANCIS MARTIN, OF SAN FRANCISCO, CALIFORNXA.

DAVENPORT.

Specification of Letters Patent.

Patented Apr. 1'?, 1917.

Application filed April 29, 1914. Serial No. 835,294.

To all whom it may concern:

Be it known that I, FRANCIS MARTIN, a citizen of the United States,residing at 1452 Filbert street, in the city and county of SanFrancisco, State of California, have invent= ed a new and usefulImprovement in Davenports, of which the following is a specification.

This invention relates to improvements in davenports, and moreparticularly to-conu. Y

vertible sofa beds.

Among the objects of this invention are to provide a convertible sofa,having a mattress foldable within said sofa, and

To provide sufficient room between the folds of said mattpess to containthe bed clothing without undue compression, whereby a fully made up bedmay be folded within the sofa.

The preferred form of putting this invention into practice isillustrated in the drawings accompanying and forming part of the presentspecification, to which like reference characters are applied to the various parts. The novelty of the invention is included in the claimsfollowing the description, but l do not wish to be understood aslimiting myself, to the disclosures made in said drawing anddescription, as many modifications are available within the spirit ofthis invention as defined in said claims.

Figure lis a side elevation in longitudinal cross section of aconvertible bed constrncted in accordance with this invention, shown inthe unfolded position.

Fig. 2 is a similar view of the lsame showing the bed in the foldedposition.

Fig. 3- is a fragmentary detail in cross section of the link hinge bywhich the swinging section of the sofa is supported.

Fig. tis a fragmentary detail in front elevation of the supporting legfor the outeredge of the swinging section of the sofa.

In detail the construction illustrated in the drawings includes the sofaframe, hat. ing the front posts 1, the rear posts 2 and the sides 3. Theback of the sofa between the sides 3 may be upholstered as indicated inthe dotted lines 4. The rectangular mattress frame is composed of theside sections 5, 6 `and 7, joined by the links 8 and 9 on opposite sidesof the frame forming hinges by which the mattress is folded upon itselfas in Fig. 2. The mattress frame is preferably composed of angle ironincluding the ends l0 and 11, forming a rectangular frame within whichany desirable spring mattress surface may be suspended; that formpreferred by me consists of a wire mesh center, suspended by spiralsprings at intervals engaging said mesh and the frame.

The head section is supported by the swing arm l2 pivoted at 13, on theplate li, fixed to the side board l5 joining the posts 1 and 2. Theother end of the arm 12 is plvoted at 1G, near the end of the head section. The side bars 5 are hinged on the pins 17 in the links 8. Thelinks 8 are supported b v the brackets 18, pivoted thereto on 'the pins19 and fixed to the hinged seat section 2O of the sofa. The side bars 6are centrally supported by the swing arms 21 pivoted thereto at 2 2 andat 23 to the seat section 20,'the opposite ends of the bar 6 hinging onthe pins 24C and 25 in the links 8 and 9 respectively. The foot sectionis supported by the side rails 7, pivoted on the pins 2G in the links 9,the other ends being supported by the pins 27 upon which the v legs 28are hinged. These legs areheld in the proper upright position by thelatches 29 pivoted at 30 on. the legs and having slots 31 engaging thepins 32, fixed in the sides 7; 'when theflegs swing to the uprightposition, the latches automatically drop into position so that thelateral notches 33 forming part of the slots, engage the pins 32 asshown in Fig. 1. The hinged seat section 20 is supported bv the legs 34,pivoted at 35; when this section is swung open these legs drop intoposition by gravity. This section 20 is hinged to the main sofa frame bythe links 35, pivoted at 36 near the opposite corners of this` section.The upper ends of these links are pivoted at 37 on the bracket 38,extending upward from the plate l14; these links thus supporting theVinner side of the section 20, and permitting its proper evoluthisposition the latches 29 are released from the pins 32 which permits thelegs 28 to collapse and lie within and parallel with the side rails 7.The notches 39 on the fixed latches 40, that are rigidly fixed at theproper angle to the legs 28, engage the studs 41 extending outward fromthe sides 6. T he resiliency in the bend 42 permits the latches 40 tospring sufiiciently, to engage the studs 41, with the proper tension. Inopening the bed, these latches 40 are released by sufficient pull on thecross rod 43, having its opposite ends riveted through the legs 28.

Vith the Jfoot section .thus folded back over the intermediate section,the seat scction 20 is swung upward and inward on the supporting links35. Theconnecting arms 44 are pivoted at 45 on the brackets 18 and at 46on the bell crank levers 47, fulcrumed at 48 on the plates 14. rIfheopposite ends of the bell crank leversare pivoted at 49 to theconnecting arms 50, in turn pivoted at 51 to the side rails 5 of thehead section. The inward swing of the seat section 20, causes theconnecting `arms 44 operating through the bell cranks 47 and connectingarms 50, to pull downward the side rail 5 of the head section;simultaneously the tensions of the spiral springs attached to the headrail 10 and the brackets 53, fixed t0 the back board 54 of the sofaframe, pull the head section inward and downward until the seat sectionbegins to descend from the vertical, the side rails 6 and links 8,hinging on their centers 17 and 24. In the folded position the link 21,centers the section 6, inside the seat section 20.

The weight of the descending seat section With its 'associated parts,depresses the head section to the position shown in Fig..2. The tensionsof the springs 52 assist in carrying the various pivotal members pasttheir dead centers, until the weight of the folded parts, completes thevarious closing actions by gravity; thus making very easy the action ofclosing or folding up the bed. Having passed the dead center, thesesprings react to ease the descending weight of the folded mattress; andsimilarly aid in the opening operation, that is obviously, simply areversal of the closing operation;

The legs 34 drop` by gravity from the latches 55, into which they dropby gravity during the closing operation; the last act in' spreaders Xextending across the frame and attached to the links 8 and 9. Thespreader" is omitted from the drawing between the links 8 to avoidconfusion. The plates 14 with the various parts attached thereto andpivoted thereon are introduced as a convenience in assembling themattress in the sofa; in this manner insuring the proper relation of thepart.

Having thus described this invention, what I claim and desire to secureby Letters Patent is:

1. A folding bed comprising a main frame, a. swinging seat hinged nearthe front edge of said main frame, a. jointed mattress having head,intermediate, and foot sections, swing arms pivoted to said head sectionand said frame, swing arms pivoted to said intermediate section andswinging seat, supporting legs on said foot section, a

bracket mounted on said seat between the head and the intermediatesections, a lever pivoted intermediate its ends on the main frame, aconnecting link pivoted to said bracket and to one end of said lever,and a link pivoted to the head section and to the other end of thelever. f

2. A folding bed comprising a main frame, a swinging seat hinged nearthe front edge of said main frame; a jointed mattress having head,intermediate, and foot sections; swing arms pivoted to said head sectionand to the main frame; a lever pivoted on the main frame; a link pivotedon said head section, and to one end of said lever; a link pivoted tothe opposite endof said lever and to said swinging seat; and supportinglegs on said foot section.

In testimony whereof, I have hereunto, set my hand this 16th day ofApril 1914.

FRANCIS MARTIN.

Witnesses:

BALDWIN VALE,

A. J. HENRY.

